Comment 5 for bug 2031934

Hello and thanks for this bug report. I can reproduce the issue as described.

The culprit is that avif support is disabled in src:libgd2, see:

libgd2 (2.3.3-9ubuntu1) mantic; urgency=low

  * Merge from Debian unstable. Remaining changes:
    - Drop the dependencies on libavif and libheif; libheif is blocked on a
      Main Inclusion Request, and libavif has an extensive rust dependency
      tree that makes it unsuitable for main.

There's a similar entry for lunar. I think this is valid wishlist bug for libgd2, so I'm changing the affected package.